Ochsner TERRA 11, Operating And Installation Manual

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INSTALLATION | Troubleshooting
40 www.ochsner.com | 982001-TERRA-M2-M4-EN04.1
Code Fault code
history
Display message Possible cause and solution
115 Er 01: DHW sensor faulty Replace sensor
116 Er 10: Outside sensor faulty Replace sensor
117 Er 14: Mixer sensor faulty Replace sensor
124 Er 20: TWR sensor faulty Replace sensor
120 Er 22: TPM or TWR shutdown sensor faulty Replace sensor
136 Er 23: TPV sensor faulty Replace sensor
118 Er 24: Buffer sensor faulty Replace sensor
114 Er 29: TWV sensor faulty Replace sensor
11 11 Er 30: Phase monitor Check power supply
134 Er 32: THG sensor faulty Replace sensor
138 Er 33: High pressure sensor faulty Check sensor
137 Er 34: Low pressure sensor faulty Check sensor
5 5 Er 36: High pressure Deficient heat distribution, faulty circulation pump, valve closed or air in the
system, check hydraulics
18 18 Er 37: Low pressure Lack of source energy, lack of refrigerant, expansion valve, check refrigerant
circuit (by OCHSNER Customer Service)
16 16 Er 38: Hot gas Expansion valve, lack of refrigerant, target temperature too high, check re-
frigerant circuit (by OCHSNER Customer Service)
10 10 Er 39: Compressor motor protection Motor overload relay, phase fault/overload, source temperature too high,
check compressor in refrigerant circuit (by OCHSNER Customer Service)
8 8 Er 42: Heat sink frost protection Deficient heat distribution, faulty circulation pump, valve closed or air in the
system, check buffer charging pump or hydraulics (brine antifreeze level)
Er 46: TSG sensor faulty Replace sensor
9 9 Er 47: Defrost fault Too little de-icing energy, evaporator/sensor, check refrigerant circuit (by
OCHSNER Customer Service)
129 129 Er 48: TQE sensor/Evaporator 1 is faulty Replace sensor
130 130 Er 49: TQA sensor/Evaporator 2 is faulty Replace sensor
12 12 Er 50: Expansion valve Check function of electronic expansion valve (by OCHSNER)
1 1 Er 56: Heat source flow rate Lack of source energy, heat source pump/filter, flow rate at heat source too
low
2 2 Er 57: Heat source frost protection Lack of source energy, source temperature too low, check heat source,
check heat source pump/filter, clean water filter, submersible pump faulty
3 3 Er 58: Heat source motor protection Check motor protection, check wiring to motor, motor protection relay, phase
fault/overload, thermal cutout
143 143 Er 59: TWV + TWR sensor break Check sensor
144 144 Er 60: TQA + TQE sensor break Check sensor
42 42 Er 71: Bus fault, room remote control Check eBus wiring
30 30 Er 80: Heat generator 1 address Check addressing
31 31 Er 81: HG 2 address Check addressing
32 32 Er 82: HG 3 address Check addressing
33 33 Er 83: HG 4 address Check addressing
34 34 Er 84: HG 5 address Check addressing
35 35 Er 85: HG 6 address Check addressing
36 36 Er 86: HG 7 address Check addressing
37 37 Er 87: HG 8 address Check addressing
20 20 Er 91: Heat sink flow rate Water pressure too low, circulation pump faulty, valve closed/air in system,
check hydraulics
21 21 Er 90: Overheating Check refrigerant circuit (by OCHSNER Customer Service)
98 98 Er 98: Auxiliary heat generator running as
only heat generator
Check operation mode of heat pump
104 104 Er104: Sum fault, heat pump OCHSNER Customer Service
108 108 Er108: Outdoor unit, general Check wiring
109 109 Er109: Compressor overheating Automatic acknowledgement
100 100 Er200: Condensation temperature too low Check refrigerant circuit (by OCHSNER Customer Service)
102 102 Er 202: Evaporation temp. too low Check refrigerant circuit (by OCHSNER Customer Service)
103 103 Er 203: Evaporation temp. too high Check refrigerant circuit (by OCHSNER Customer Service)
240 240 Er240: OTE cannot recognise a Modbus
PCB
Check by OCHSNER Customer Service
241 241 Er241: Modbus communication error Power shutdown? Check the wiring of the Modbus cable between indoor and
outdoor units. Otherwise check by OCHSNER Customer Service
242 242 Er242: CAN bus communication fault Check wiring of CAN bus cable and Modbus cable (possible consequential
fault of Er 241), otherwise check by OCHSNER Customer Service